Most Rakudo built-ins are written for correctness first, and without a good
feeling for what constructs are fast and what aren't. A thorough review (and
preferably profiling) could bring decent speed improvements, as the case of
int ranges showed.

We will try to convince people that Tyler Curtis' optimization framework for
PAST and POST should be shipped with parrot (probably compile PIRs in ext/,
just like NQP-rx does it now). Using that, we can do constant folding

Rakudo Star feedback

Compilation takes too much memory. pmichaud will try a hack to split the
setting, which would solve that problem.

There was some discussion about the roles + outer scopes bugs, which was way
over my head. It seems to be related to the fact that parrot has two outer
chains for nested blocks: one at compile time, one at runtime. Since role
methods are flattened into classes, there compile time outer block is actually
different than where it runs, and that screws up ... forget it, somebody else must describe it.